Which of the following is not true about covalent compounds?
a. they are made of molecules and can be gases, liquids, or solids.
b. they have low melting and boiling points.
c. they are good electrical conductors in all phases.
d. many are soluble in nonpolar liquids but not in water.

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.